Added: Chelise Ludwick - Date: 19.10.2021 09:46 - Views: 47239 - Clicks: 5899
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Log in. Adult searching sex encounters Bear in through your institution. Sexually selected infanticide SSI has been documented in some species with a mating system in which males have almost exclusive breeding rights with 1 or more females. When the dominant male is removed, the new male kills the offspring sired by the male to enable the mother to be bred earlier. It has been suggested that this immigrant male hypothesis of SSI operates in grizzly bears Ursus arctos and that removing dominant males by hunting in high cub mortality due to killing by immigrant males, or in low reproductive rates because of a female counterstrategy of using suboptimal habitat to avoid potentially infanticidal immigrant males.
I tested 2 predictions of the immigrant male hypothesis in a hunted area adjacent to protected areas with high densities of grizzly bears that could supply immigrant males. These predictions were not supported. Similarities of these sex ratios suggest that there was not a substantially greater influx of subadult males than females into the hunted area.
Cub survival to the end of the breeding season was high 0. Yearling survival was 0. I propose a second hypothesis of how SSI may operate in bears. This mate recognition hypothesis of SSI is that males of any age may, if they are able, kill cubs that they believe they did not sire the year and try to mate with the mother. I use a simulation model to evaluate factors that may influence the existence and likely form of SSI in bears. of this study suggest that killing some adult males under a sustainable management regime does not decrease cub survival.
Ursus is the only journal dedicated to providing scientific information on all of the world's 8 species of bears. Ursus is peer-reviewed and published twice yearly. Ursus includes articles on all aspects of bear management and research worldwide. In addition to manuscripts reporting original research, submissions may be based on thoughtful review and synthesis of ly-reported information, innovative philosophies and opinions, and public policy or legal aspects of wildlife conservation.
Notes of general interest are also welcome and are published as "Short Communications". Manuscripts that do not fit a traditional research style are welcome and may be published under the heading "Perspectives, Essays, and Reviews". The International Association for Bear Research and Management IBA is a non-profit tax-exempt USA tax organization open to professional biologists, wildlife managers and others dedicated to the conservation of all bear species. The organization has over members from over 50 countries. It supports the scientific management of bears through research and distribution of information.
The IBA sponsors international conferences on all aspects of bear biology, ecology and management. Many of the conference papers are published as peer-reviewed scientific papers in the journal Ursus. Cite this Item Copy Citation. Export Citation Export to NoodleTools. Export to RefWorks.
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Ability to save and export citations. Custom alerts when new content is added. Abstract Sexually selected infanticide SSI has been documented in some species with a mating system in which males have almost exclusive breeding rights with 1 or more females. Journal Information Ursus is the only journal dedicated to providing scientific information on all of the world's 8 species of bears. Publisher Information The International Association for Bear Research and Management IBA is a non-profit tax-exempt USA tax organization open to professional biologists, wildlife managers and others dedicated to the conservation of all bear species.Adult searching sex encounters Bear
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